MessageDemux
The MessageDemux (Demultiplexer) node is used to separate a MessageGroup into individual outputs. It currently serves as way to demultiplex the output of Sync node.How to Place It
Python
C++
Python
1pipeline = dai.Pipeline()
2demux = pipeline.create(dai.node.MessageDemux)
Inputs and Outputs
Command Line
1/
2 ┌───────────────────┐
3 input │ │
4 ──────────────►│ │
5 │ MessageDemux │ output1
6 │ ├───────────►
7 │ │ output2
8 │ ├───────────►
9 │ │ ...
10 └───────────────────┘
input
- MessageGroupoutput1
,output2
, ... - Individual output messages
Usage
The MessageDemux node is particularly useful for handling different types of data coming from a single source. For example, when the Sync node is used to synchronize the outputs of multiple nodes, the output of the Sync node is a MessageGroup containing all the messages from the synchronized nodes. The Demux node can be used to separate the messages into individual streams.Python
C++
Python
1# Create sync node and set sync threshold
2sync = pipeline.create(dai.node.Sync)
3sync.setSyncThresholdMs(timedelta(milliseconds=100))
4
5# Create demux node
6demux = pipeline.create(dai.node.MessageDemux)
7
8# Sync the outputs of multiple nodes
9rgb.preview.link(sync.inputs["rgb"])
10stereo.depth.link(sync.inputs["depth"])
11script.outputs["out"].link(sync.inputs["script"])
12
13sync.out.link(demux.input) # Sync output is a MessageGroup containing all the messages from the synchronized nodes
14
15# Demux the MessageGroup into individual messages
16demux.outputs["rgb"].link(xout1.input)
17demux.outputs["depth"].link(xout2.input)
18demux.outputs["script"].link(xout3.input)
Examples of Functionality
Reference
Need assistance?
Head over to Discussion Forum for technical support or any other questions you might have.